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Proof step 5 from proof pathex-putbyte-field (previous step)

validrefs(str, r0 ' + refs0, mkclasstype(`java.lang.Object' .class), st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) ⊦ refs0 = [], junkref(str, r0, st), validrefs(str, r0 ' + refs0, mkclasstype(`java.lang.Object' .class), st)

User applied rule insert lemma

And obtained the following new goals

Proof step 4:
⊦ validrefs(str, refs, ty, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) ∧ ¬ junkref(str, refs .first, st) ∧ refs ≠ [] → validrefs(str, refs, ty, st)

Rule argument

[LEMMAARG : validrefs-putbyte-field, [str, refs, ty, st, r, class, fieldvar, by] → [str, r0 ' + refs0, mkclasstype(`java.lang.Object' .class), st, r, class, fieldvar, by]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ (r ' + refs) .first = r], [CSIMPSEQ : ⊦ ¬ refs + refs0 ≠ [] ↔ refs = [] ∧ refs0 = []], [CSIMPSEQ : ⊦ r ' ≠ []])], [EXTRATERMS : (str, r0 ' + refs0, mkclasstype(`java.lang.Object' .class), st, r, class, fieldvar, by)]]